Replace ffprobe-static with ffmpeg-static for metadata extraction in
migration scripts. This removes the requirement for ffprobe binaries
across Docker, CI, and Vercel environments, simplifying the dependency
graph.
- Refactor useAuthSession to call useSession unconditionally, adhering to React Rules of Hooks by using a stub client when auth is disabled.
- Update migration script to insert a system user to satisfy foreign key constraints during database transitions.
- Implement AbortController and timeouts in entrypoint endpoint polling to prevent hanging fetch requests.
- Use useMemo in PDFViewer to provide a stable file object, preventing unnecessary re-renders and warnings.
- Enhance state cleanup in EPUBContext and AuthLoader to handle missing metadata or disallowed sessions gracefully.
This commit restructures the audiobook generation and serving layer to rely exclusively on S3-compatible blob storage, removing the dependency on local filesystem paths.
- Bundle `ffmpeg` and `ffprobe` binaries via npm to ensure portability across environments.
- Update API routes to stream audio directly from blob storage instead of local disk.
- Remove legacy migration endpoints and filesystem-based indexing logic.
- Add startup scripts to facilitate the transition from local to remote storage.
BREAKING CHANGE: Audiobook functionality is now strictly dependent on S3 configuration. The previous filesystem-based storage method has been removed.
